The Wilton Park conference "Uncertain futures: where next for multilateral verification?" took place during 1-3 June with over 50 participants from many regions of the world and from intergovernmental organisations, governments and civil society. It was part of VERTIC's 25th anniversary celebrations. Tibor Toth, Executive Secretary of the Comprehensive Nuclear Test Ban Treaty Organisation, and Vitaly Matsarski, Coordinator, Reporting Data and Analysis Programme, UNFCC, gave the keynote addresses. Our VERTIC Blog provides an overview of each day's events.